First, let me explain the reasons why I deducted one star.
1) Although in the pictures you can see that there is a built-in "bluetooth board", this is not true. Only the UM-25 has bluetooth, unfortunately I did my research after the purchase.
2) If I had searched better, I would have preferred the A8-B (available here on Scroutz), the additional USB-C ports are useful to have.
Despite the above, it is not a throwaway product. Its measurements are done with great precision and it has 10 memory slots that are not erased when you disconnect it from the power supply, they will only be erased when you press the appropriate button. It also provides a graph for voltage and current, but for regular applications, this is not particularly interesting.
I do not regret the purchase, but if, for example, it broke, I would replace it with the A8-B.